通过考察不同因素对砂轮锋利性、寿命及加工工件表面粗糙度的影响,优选出了端面超精磨CBN砂轮的制备工艺.通过对比实验,得出最优配比如下:CBN磨料的粒径优选添加40 μm,陶瓷空心球的粒度优选添加240目,其添加量优选体积分数为20％,金属粉的优选体积分数为9％.该配方制备的CBN砂轮的锋利性、寿命及加工工件的表面粗糙度均达到了较好的效果.%By studying main influence factors on wheel sharpness, lifetime and machined surface roughness of workpieces, optimum manufacturing technology of cermet CBN grinding wheel for end ultra-precision grinding was researched. After a series of comparative experiments, optimized manufacturing parameters were obtained as follows; particle size of CBN grits 40 μm; hollow ceramic sphere size 240 meshes with addition amount 20% (volume fraction) ; and volume fraction of metal powder 9%. CBN grinding wheels prepared according to the formula above showed better properties, such as sharpness, lifespan and surface roughness of machined workpieces.
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